really get under it and inspect yourself the rockers and floors i looked at close to different xjs around here all stating the underside was clean and rust free and all of them had rotten rockers and floors were starting to go no matter how nice people seem if your buying something from them pretend like they are trying to screw you over check everything like tranny fluid oil coolant everything also if you do happen to find anything additional not mentioned in his post use that to knock the price down if you can now im not saying go and be a dick to the guy just cause hes selling something but dont trust a dang thing anyone ever says until you can prove it for yourself